This article lists the official squads for the 1999 Rugby World Cup in Wales.

Pool A

Scotland

Head coach: Jim Telfer

South Africa

Head coach: Nick Mallett

Spain

Head coach: 🇪🇸 Alfonso Feijoo

Uruguay

Head coach: Daniel Herrera

Pool B

England

Head coach: 🏴󠁧󠁢󠁥󠁮󠁧󠁿 Clive Woodward Leon Lloyd and Martyn Wood were called up on 23 September as injury replacements for Kyran Bracken and David Rees.

Italy

Head coach: 🇮🇹 Massimo Mascioletti

New Zealand

Head coach: 🇳🇿 John Hart

Tonga

Head coach: 🇹🇴 Polutele Tuʻihalamaka

Pool C

Fiji

Head coach: 🇳🇿 Brad Johnstone

Namibia

Head coach: 🇿🇦 Rudy Joubert

France

Head coach: 🇫🇷 Jean-Claude Skrela 1 Fabien Galthié was called up to the squad to replace Pierre Mignoni, who suffered an injury mid-tournament.

Canada

Head coach: 🇮🇪 / 🇨🇦 Patrick Parfrey

Pool D

Wales

Wales named an initial 30-man squad for the tournament in June 1999. The highlight of the selection was centre Jason Jones-Hughes, who was born in Australia, but was believed to be qualified for Wales through his father. The Australian Rugby Union (ARU) disputed Jones-Hughes' selection because he had already played for the Australian Barbarians, who were considered Australia's de facto second team. This led to a protracted legal battle over Jones-Hughes' eligibility for Wales, in which the International Rugby Board initially ruled in Australia's favour; on appeal, Wales were allowed to select Jones-Hughes, but the ARU refused to release him from his contract with New South Wales. Nevertheless, Jones-Hughes was ultimately allowed to join the Wales team and was named on the bench for the tournament opener against Argentina. Head coach: 🇳🇿 Graham Henry

Argentina

Head coaches: 🇳🇿 Alex Wyllie and 🇦🇷 Héctor Mendéz

Samoa

Head coach: 🇳🇿 Bryan Williams

Japan

Head coach: 🇯🇵 Seiji Hirao

Pool E

Ireland

Head coach: 🇳🇿 Warren Gatland Gordon D'Arcy replaced the injured Girvan Dempsey on 11 September 1999.

United States

Head coach: 🇺🇸 Jack Clark

Australia

Head coach: 🇦🇺 Rod MacQueen

Romania

Head coach: Mircea Paraschiv